Lesser Noctule vs small rivulet

Nyctalus leisleri compared with Perizoma alchemillata

Key Differences

• Lesser Noctule is Endangered while small rivulet is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	small rivulet
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Chiroptera (Bats)	Lepidoptera (Butterflies & Moths)
Family	Vespertilionidae	Geometridae
Genus	Nyctalus	Perizoma
Species	Nyctalus leisleri	Perizoma alchemillata

Evolutionary Relationship

Lesser Noctule and small rivulet share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Lesser Noctule

EN — Endangered

small rivulet

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	small rivulet
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

small rivulet

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden